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A member asked:
Why is my ultrasound measuring me pregnant a few days after my period?
A doctor has provided 1 answer
Ultrasound variability: your ultrasound is not pinpoint accurate. Gives a range of days for the age of the fetus. That is the standard deviation. At that stage, it could be as much as 4 days. If your dates are off, then even more. Usually a second ultrasound will narrow the gap in dates
Answered 4/5/2015
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